If someone puts some of your content online than google has no problem with that. I have seen this a lot. Your site and the copycat’s will not get banned only the original (yours) will be less valuable for ranking.
Because the webmaster is responsible for all content published he/she should be respinsible at all times, but in case you bought some websites with content it is almost impossible to check all. :Cry:
Contentwriters should only give you original texts before I put it online I check some paragraphs now I did not do that in the past, that is why my sites have contact emails to prevent problems afterwards.
But hunting :cappy:for content to copy is just not done.
Rick